Lock



Oct. 27, 1936. s, S|NGE| ET AL l I 2,059,046

LOCK

Filed June 29, 1934 3 Sheets-Sheet 2 JUL/us hf F21: DMA/vv SAUL Sl/weeey JOSEPH ILVEQMAN l NVE HTOBS y fm mana ATTOQNEY.

Oct. 27, 11936. s. SWGER Em 2,059,046

LOCK

Filed June 29, 1954 I s sheets-sheet` s ,I Nvarrrolzg @fra/f PatentedOct. 27, 1936 LOCK Saul Singer, Joseph Silverman, and JuliusH. Friedman,ssining l\l. Y.

Application June 29, 1934, Serial No. 132,976

12 claims. (ci. 'iov-14)Y This invention relates to improvements inlocks,

. and relates more particularly to a lock having an `improved boltstructure with novel means for actuating same.

One of the principal objects of the present invention, is to provide alock having positive bolt action and positive locking means therefor inorde-r that the bolt-may be actuated only by employing the proper keytherefor.

Considerable difiiculty has been experienced in the conventional type oflocks which are used in lofts, factories ,and the like, because of arather common practice amongrburglars whoplan `one of their confederatesin the building prior to closing hours, this confederate later openingthe door on the inside, thereby letting the other members into theplace.

One of the principal objects of the present invention is the pro-visionof an improved lock which, once it is locked from the outside, cannot beopened from the inside, unless the bolt is first retracted by employinga key from the outside, means being provided, however, for insidelocking, if same is desired.

A further object of the invention is the provision cfa lock which may beactuated'from the outside by employing a key even though the same haspreviously been locked on the inside.

In the drawings: 4 Y v MFig., 1 is a vfront elevation of the open casingAand. of the various elements contained therein, said view showing theposition of the bolt structure when same has been partially moved intolocking position by actuation of they key from the outside.

Fig. 2 isa broken elevation `similartolig. 1, which shows the positionof various of the elements when the Vbolt is in a fully extendedposition by actuation from the inside.

Fig. 3 is a front elevation showing the position of the parts when thebolt is in aiully retracted position. -v

Fig. 4 is a transverse verticalv section taken on line 4 4 of Fig. 3. i

Fig. 5 is a broken section taken on line 5--5 of Fig. 3.

Fig. 6 is a front elevationof the main bolt.

Fig. '7 is a bottom elevationthereof.`

Fig. 8 is a front elevation of the locking slide.

Fig. 9 is an end view thereof.

'- Fig.. l0 is'a top plan View of the locking latch. Fig.'11 isa'si'deelevation of'one ofthe auxiliary bolt members.

' Fig. 12 Yisa rear elevation, partially in section,

of `the preferred form of pin tumbler locking mechanism.

Referring now to the drawings more in detail,

`the embodiment includes a substantially rectangular `hollow casing `lwhichmay or may not 5 have a removable cover as desired. One end of saidcasing is provided with a plurality of substantiallylrectangularapertures I-l through which the'several bolts pass. This end portion,which isindicated at |l2is shown in the drawings to be 10 uconvex,` andis provided with a bevelled face I3,

although it may be made flat and. Vstraight if As heretofore stated, thepresent invention is directed particularly to a novel bolt mechanism l5which is adapted to be `actuated Vby a suitable pin tumbler Vor otherkey operated mechanism. No

"claim is made herein to any particular type of such mechanism, inasmuchas any one of a number of pin tumbler locks can be provided, thezg()essential feature, however, of such a lock being Vthat the barrel orrotatable member, when actuated, revolves one complete revolution, andthat the barrel, when actuated to move the bolt to the locking position,may not be revolved to unlock the bolt Without the use of the key. Inthe drawirugs,V this mechanism is shown aslincluding an 'outer casingI4, carrying arotatable barrel structure l5 cornposedofV twosemi-cylindrical portions, and akey aperture I6.

The outer barrelgo I4 'is suitably secured to the inner surface l1 ofpointed as .at 5 and. normally residing in the key aperture as shown inFig. l2. The tumblers are, Aof course, of varying lengths and-areengaged by short pins 6 which are urged downwardly by y40 means of coilcompression springs l positioned 4within a housing I4' integrally formedwith the casing. vWhen thev proper key is inserted in the lock the upperterminalsl ofthe respective tumblers are 'raised to an elevation wherethey are 45 `hush with the upper surface of the barrel which permits thebarrel to be rotated. When the ro- `tatableSbarrelstructure l5 isrevolved by actuation of a key, a circular cam platerl, which is aiiixedto the rear end thereof, is also revolved. A single cam arm I9, integraltherewith, actuates the bolt;

As` previously stated, the lock is of a type which ,permits one completerevolution of the barrel.

whenthe boltis in a retracted position the cam arm is either at the topor the bottom, as the case may be, and the pin 6 in the lowered positionshown in Fig. 12, thereby locking the barrel against rotation. When itis desired to move the bolt into locking position the barrel is givenone complete revolution by means of the key and the cam arm therebyassumes its original position and thepin 6 drops down, again se'-'curing the barrel against rotation without the aid of the key. In otherwords, the member which the cam arm is adapted to actuate may not bemoved without the use of a key.

The main bolt, which is indicated by the reference numeral 20, isprovided on its inner surface with a ridged portion 2| which moves in alongitudinal guiding slot 22 in the inner surface of the casing. Thismain bolt is illustrated in detail in Figs. 6 and '1, and includes anelongated inner end portion 23 having a dovetailed slot 24 on its outerface extending the greater portion of its length.

The opposite end 25 of the bolt 20 is substantially rectangular andconstitutes the main bolting portion, the terminal 26 thereof having aconvex and bevelled surface coinciding with the bevelled surface of theend portion I3 of the casing.

The central portion 21 of the main bolt is substantially triangular inshape, and carries on its outer surface a triangular plate 28 which issecured thereto by screws 29. Between the triangular portion 21 and theremovable plate 28, a guide slot 30 is formed on each of the diagonalfaces of said portion. An auxiliary bolt 32 is slidably carried in eachone of said slots, each of said bolts having a reduced portion 33 andoutwardly extending flanged portions 34 at its inner end, said ilangedportions being engaged by the slot 30. When the main bolt is in itsfully retracted position, the auxiliary bolts lie adjacent to the innerend of the slots, and as the main bolt is moved outwardly, the inner endportions of the auxiliary bolts move outwardly in their slots. The outerend portion 32 of the auxiliary bolts are also shaped to coincide withthe surface I3.

The following means are provided for actuating the main bolt from theinside of the door. A rack member 35 is secured to the upper surface ofthe inner end portion 23 of the main bolt, said rack member beingengaged by the teeth 36 of a pinion 31 which is provided with a thumbturn (not shown) on the outside of the casing. A locking slide orsupplemental locking element 40 having on its inner face a maledovetailed portion 4I is slideably carried on the main bolt as shown inFig. 4.

The lower surface of this locking slide is provided with a pair ofspaced recesses 42 having diagonal side walls 43, said side walls beingengaged by the cam portion I9 on the circular cam plate I8. The lockingslide 40, although slideably carried on the inner end portion 23 of themain bolt, is nevertheless out of engagement therewith when the mainbolt is in its fully retracted position as shown in Fig. 3. When,however, the look is actuated by the key, the locking slide becomesengaged with the main bolt in the following manner. A locking latch bar45 is pivotally mounted on the upper surface of the locking slide at 46in a bracket 41. This locking latch bar, a detailed top plan view ofwhich is shown in Fig. 10, is provided with an inwardly ollset portion48 at its outer or free end, this offset portion having a downwardlyextending dog portion 49 which engages a square milled notch 50 at oneend of the rack member 35.

The outer or free terminal of the locking latch bar is bevelled as shownat 5I, this portion engaging a bevelled pawl 52 secured to the end wallof the casing. The outer or free end of the locking latch bar 45 isurged downwardly by means of a coil spring 53 which resides at its lowereno. in an aperture 54 in the locking slide and engages at its upper endan extension portion 55 of the locking latch bar.

When the main bolt 20 is in its fully retracted position as shown inFig. 3, the locking slide 40 is likewise in a fully retracted position,and the locking latch bar 45 is elevated by virtue of its outer endengagement with the bevelled pawl 52. In this position, the lockingslide, although carried by the main bolt, is, nevertheless, out ofengagement therewith, and when the bolt is actuated from the inside ofthe dwelling by means of the thumb turn heretofore mentioned, the mainbolt moves outwardly independently of said locking slide. When, however,the lock is actuated from the outside by means of the key, the initialmovement of the cam arm I9 against the slot in the locking slide causesthe locking latch vbar to move downwardly and the dog portion 49 fallsinto the square milled notch 50, thereby causing both members to move inunison. When in its fully extended position, the lock bolt cannot beactuated from the inside because the cam portion I9, which is securedagainst rotation, prevents the locking slide from moving.

It will be noted that the inner end of the rack 35 is formed with abevelled portion as at 51. Thus, when the main bolt has been moved intolocking position from the inside of the dwelling by means of the thumbturn and it is desired to retract the bolt from the outside by means ofthe key, the cam plate is revolved to cause the slide 40 to moveoutwardly. As the portion 49 on the latch bar 45 engages the inner endof the rack it is caused to ride upwardly over the bevelled portion 51and thence drop into the notch 50. In the event that it is desired tomake the lock incapable of actuation from the outside after being lockedfrom the inside, the inner end of the rack may be straight rather thanbevelled, thereby preventing the portion 49 on the latch bar fromentering the square notch 5U unless the latch bar has rst been elevatedby means of engagement with the panel 52.

What we claim is:

1. In a lock of the class described, the combination of a casing, alongitudinally movable bolt having a rack portion on one longitudinaledge thereof, a pinion engaging said rack portion and a thumb turnoperatively connected with said pinion, a locking element slideablycarried on but normally unconnected with said bolt, said locking elementhaving a plurality of spaced recesses along one longitudinal edgethereof, a key actuated cam having a single cam portion adapted toengage one of said recesses at one time, and releasable means forlocking said locking element into engagement with the bolt to cause thebolt to move therewith when said locking element is actuated by the cam.

2. In a lock of the class described, a casing, a longitudinally movablebolt structure positioned within said casing, a rack portion on onelongitudinal edge of said'bolt structure, a pinion engaging said rackportion, a thumb turn operatively connected with said pinion, a pair ofdiagonally disposed auxiliary bolt portions slideably carried by saidbolt structure, a longitudinally movable locking element slideablycarried by but movable independently of said bolt structure, keyactuated means for moving said locking element, and releasable means forsecuring said locking element in engagement with said bolt structure tomove in unison therewith when said locking element is moved.

3. In a lock of the class described, the combination of a casing, alongitudinally movable bolt structure positioned Within said casing, arack portion on one longitudinal edge of said bolt structure, a pinionengaging said rack portion, a thumb turn positioned outside the casingand being operatively engaged with said pinion, said bolt structurehaving a pair of diagonally disposed slots adjacent to the bolt portionthereof, a pair of auxiliary bolt members slidably carried in said slotsand adapted to move out of said casing at an angle to the movement ofsaid bolt structure, a locking element slidably carried by butindependently movable of said bolt structure, a locking dog pivotallycarried by said locking element and engageable with said bolt structureto cause said locking element and said bolt structure to move in unison,said locking element having a pair of spaced slots along onelongitudinal edge thereof, a rotatable cam having a single cam portionengageable with the side portions of one of said slots at one time, andadapted to move said locking element longitudinally, and a key actuatedelement secured to and adapted to actuate said cam.

4. In a lock. the combination of a longitudinally moveable bolt, thumbturn means for actuating said bolt, a supplemental locking elementslidably carried on but normally unconnected with said bolt, keyactuated means for moving said supplemental locking element, and meansfor interlocking said bolt and said supplemental locking element Whenthe latter is actuated by the key.

5. In a lock, the combination of a main bolt, a supplemental lockingelement carried by but normally unconnected with said main bolt, thumbturn means for actuating the main bolt independently of the lockingelement, key actuated means for moving the locking element and means forinterlocking said bolt and said locking element when the latter isactuated by the key.

6. In a lock, the combination of a longitudinally moveable bolt, meansdisposed on one side thereof for actuating said bolt, a supplementallocking element slidably carried on but normally unconnected with saidbolt, key operated means for actuating said supplemental lockingelement, and means for interlocking said bolt and said supplementallocking element when the latter is actuated.

7. In a lock, the combination of a main bolt, a supplemental lockingelement carried by but normally unconnected with said main bolt, thumbturn means for actuating the main bolt independently of the lockingelement, key actuated means for moving the locking element and means forinterlocking said bolt and said locking element only when the latter isactuated by the key, said main bolt being provided, adjacent to itsouter end, with a pair of opposed, diagonally disposed slideways,supplemental bolts carried in said slideways and being moveable thereinwhen the bolt is moved outwardly.

8. In a lock, the combination of a main bolt, a supplemental lockingelement carried by but normally unconnected with said main bolt, thumbturn means for actuating the main bolt independently of the lockingelement, key actuated means for moving the. locking element and meansfor interlocking said bolt and said locking element only When the latteris actuated by the key, said key actuated means comprising a casing, abarrel positioned within said casing, a cam plate having a cam armcarried by said barrel, the supplemental locking element having camengaging portions along one edge thereof to receive said cam arm whenthe barrel is actuated by the key.

9. In a lock, the combination of a casing, a main bolt positionedtherein, a supplemental locking element carried by but normallyunconnected with said main bolt, means disposed on one side of thecasing for actuating the main bolt independently of the locking element,key actuated means on the opposite side of the casing for moving thelocking element and means comprising a latch bar for interlocking saidbolt and said locking element only when the lattel` is actuated by thekey.

10. In a lock, the combination of a main bolt, a supplemental lockingelement carried by but normally unconnected with said main bolt, thumbturn means for actuating the main bolt independently of the lockingelement, key actuated means for moving the locking element and means forinterlocking said bolt and said locking element when the latter isactuated by the key, said thumb turn means being inoperative when themain bolt has been advanced by the key actuated means.

ll. In a lock, the combination of a main bolt, a. supplemental lockingelement carried by but normally unconnected with said main bolt, thumbturn means for actuating the main bolt independently of the lockingelement, key actuated means for moving the locking element and means forinterlocking said bolt and said locking element when the latter isactuated by the key, said key actuated means comprising a casing, abarrel positioned Within said casing, a cam plate carried by saidbarrel, the supplemental locking element having cam engaging means, andmeans disposed Within the casing for rendering said carn plateinoperative unless actuated by the key.

l2. In a lock, the combination of a casing, a main bolt slidably mountedin said casing, a locking slide carried by said main bolt and beingnormally unconnected therewith, one edge of' said locking slide having apair of spaced apart cam engaging portions, thumb turn means foractuating said main bolt, key actuated means for moving the lockingslide, means comprising a releasable latch bar for connecting said mainbolt to the locking slide when the latter is moved by the key, said keyactuated means comprising a casing, a barrel positioned therein, meansfor rotating the barrel, a cam plate carried at one end of the barreland a cam arm carried by said cam plate and adapted to engage the camportions on the locking element and move the same and means disposedwithin the key actuated means for preventing rotation of the barrelunless actuated by the key.

JOSEPH SILV'ERMAN. SAUL SINGER. JULIUS H. FRIEDMAN.

